You can find a key to Parasola species here – http://www.grzyby.pl/... (Under their old names) , that site can also be used for Coprinopsis and Coprinellus, but they are not all neatly under one subsection like Parasola.

that there are a cluster of Parasola that seem to be mostly indistingishable macroscopically. I see that you’re making those fine distinctions from microscpy and I applaud you for that. Nice going. It makes it easier for me too as an amateur because now I can call them Parasol mushrooms that belong to a cluster of look-alikes. Someday I suppose I’ll find the time to read the paper that delimits the segregates of Parasola.